Elizabeth Loder, MD
Internal Medicine Physician · Boston, MA
Elizabeth Loder, MD is an internal medicine physician with a practice address in Boston, Massachusetts, and NPI 1881684157, issued on Oct 26, 2005. Check the license (Massachusetts 58787, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Elizabeth Loder
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 58787 MA
Self-reported in NPPES; status is on the state search - Practice location
- 125 Nashua St, Boston, MA 02114
- Phone
- (615) 573-2493
- Enumerated
- Oct 26, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (617) 573-7119
- Medicare enrollment
- Enrolled (PECOS I20041216000311); accepts Medicare assignment
- Medical or professional school
- University Of North Dakota School Of Medicine, 1985
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Also registered at 125 Nashua St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Elizabeth Loder in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 58787Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average internal medicine physician in 2024
358 Medicare Part D claims for 42 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.
Most prescribed
- Nurtec Odt41 claims
- Rizatriptan36 claims
- Gabapentin28 claims
- Sumatriptan Succinate25 claims
- Topiramate20 claims
- Butalbital-Acetaminophen-Caffe16 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Brigham And Womens Physicians Organization IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Elizabeth Loder among 6,825 internal medicine physician records in Massachusetts
Elizabeth Loder, MD is one of 6,825 internal medicine physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 88% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1985 · median 2004 among the 4,103 with a school on file
- Record last updated2026 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2,320 internal medicine physician records list a practice address in Boston
They are 2,320 of the 41,865 NPPES records with a practice address in Boston, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Boston → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jaime Chang, MDBoston, MA 021141205825197
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- James Evans, MDBoston, MA 021141215939533
- Nicolette Fontaine, MDBoston, MA 021141841287174
- Nancy Gagliano, MDBoston, MA 021141881680767
- Patricia Gibbons, MDBoston, MA 021141619967221
- Steven Hersch, MDBoston, MA 021141174512149
- Mira Kautzky, M.D.Boston, MA 021141972505402
Common questions
What is Elizabeth Loder, MD's NPI number?
Elizabeth Loder, MD's National Provider Identifier (NPI) is 1881684157, issued on Oct 26, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Elizabeth Loder, MD located?
The NPPES record lists a practice address at 125 Nashua St, Boston, MA, 02114. Phone: (615) 573-2493. Providers update this record themselves, so call before visiting.
How can I verify Elizabeth Loder, MD's license?
NPPES lists Massachusetts license number 58787, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Elizabeth Loder, MD prescribe under Medicare Part D?
In 2024, Elizabeth Loder, MD had 358 Medicare Part D claims for 42 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.